package com.hafu.dao;
import com.hafu.model.KhInfo;
import com.hafu.util.DbUtil;
import com.hafu.util.StringUtil;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;

public class KhInfoDao {
    public Boolean addKhInfo(KhInfo kh) {
        String sql = "insert into khinfo values(null,?,?)";
        Connection conn = DbUtil.getConn();
        try {
            PreparedStatement preparedStatement = conn.prepareStatement(sql);
            preparedStatement.setString(1, kh.getName());
            preparedStatement.setString(2, kh.getTel());
            int i = preparedStatement.executeUpdate();
            if (i > 0) {
                System.out.println("添加成功");
                return true;
            } else return false;
        } catch (SQLException throwables) {
            throwables.printStackTrace();
        }
        return false;
    }
    public boolean deldeteKhInfo(int id) {
        String sql = "delete from khinfo where id=?";
        Connection conn = DbUtil.getConn();
        try{
            PreparedStatement preparedStatement = conn.prepareStatement(sql);
            preparedStatement.setInt(1,id);
            int i = preparedStatement.executeUpdate();
            if(i>0){
                System.out.println("删除成功");
                return true;
            }else return false;
        } catch (SQLException throwables) {
            throwables.printStackTrace();
        }
        return false;
    }
    public ArrayList<KhInfo>getKhInfoByName(KhInfo kh){
        ArrayList<KhInfo>list = new ArrayList();
        Connection conn = DbUtil.getConn();
        String sql = "select * from khinfo";
        if(!StringUtil.isEmpty(kh.getName())){
            sql = sql+"where name like'%'+kh.getName()+'%'";
        }
        try{
            PreparedStatement preparedStatement = conn.prepareStatement(sql);
            ResultSet resultSet = preparedStatement.executeQuery();
            while(resultSet.next()){
                int id = resultSet.getInt("id");
                String name = resultSet.getString("name");
                String tel = resultSet.getString("tel");
                KhInfo khinfo = new KhInfo(id,name,tel);
                list.add(khinfo);
            }
        } catch (SQLException throwables) {
            throwables.printStackTrace();
        }
        return list;
    }
    public Boolean updateKhInfo(KhInfo kh){
        String sql = "update khinfo set name = ?,tel=?where id = ?";
        Connection conn= DbUtil.getConn();
        try{
            PreparedStatement preparedStatement = conn.prepareStatement(sql);
            preparedStatement.setString(1,kh.getName());
            preparedStatement.setString(2,kh.getTel());
            preparedStatement.setInt(3,kh.getId());
            int i = preparedStatement.executeUpdate();
            if(i>0){
                System.out.println("修改成功");
                return true;
            }else return false;
        }catch(SQLException throwables){
            throwables.printStackTrace();
        }
        return false;
    }
}